/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.joseph.controller;

import com.joseph.dao.StudentDaoLocal;
import com.joseph.model.Student;
import java.io.IOException;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Ceballos
 */
public class StudentServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @EJB
    private StudentDaoLocal studentDao;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String action = request.getParameter("action");

        String firstname = request.getParameter("firstname");

        String lastname = request.getParameter("lastname");

        String studentIdStr = request.getParameter("studentId");

        int studentId = 0;

        if (studentIdStr != null && !studentIdStr.equals("")) {
            try {
                studentId = Integer.parseInt(studentIdStr);
            } catch (NumberFormatException l) {
                System.out.println("No existe");
                request.setAttribute("nulo", "Error de escritura Solo Ingrese numeros");
                request.getRequestDispatcher("studentinfo.jsp").forward(request, response);

            }

        }

        String yearLevelStr = request.getParameter("yearLevel");

        int yearLevel = 0;
        if (yearLevelStr != null && !yearLevelStr.equals("")) {
            yearLevel = Integer.parseInt(yearLevelStr);
        }

        Student student = new Student(studentId, firstname, lastname, yearLevel);

        if ("Add".equalsIgnoreCase(action)) {
            try {
                studentDao.addStudent(student);
                request.setAttribute("student", student);
                request.setAttribute("allStudents", studentDao.getStudent(studentId));
                request.getRequestDispatcher("studentinfo_1.jsp").forward(request, response);

            } catch (IOException | ServletException e) {
            }

        } else if ("Edit".equalsIgnoreCase(action)) {
            studentDao.editStudent(student);
            request.setAttribute("student", student);
           // request.setAttribute("allStudents", studentDao.getStudent(studentId));
            request.getRequestDispatcher("studentinfo_1.jsp").forward(request, response);
        } else if ("Delete".equalsIgnoreCase(action)) {
            studentDao.deleteStudent(studentId);
            request.getRequestDispatcher("studentinfo.jsp").forward(request, response);

        } else if ("Search".equalsIgnoreCase(action)) {
            student = studentDao.getStudent(studentId);
            if (studentDao.getStudent(studentId) == null) {
                System.out.println("No existe");

                request.setAttribute("nulo", "No existe el Usuario");
                request.getRequestDispatcher("studentinfo.jsp").forward(request, response);

            } else {
                request.setAttribute("student", student);
                // request.setAttribute("allStudents", studentDao.getStudent(studentId));
                request.getRequestDispatcher("studentinfo_1.jsp").forward(request, response);

            }

        } else if ("Volver".equalsIgnoreCase(action)) {
            student = studentDao.getStudent(studentId);
            request.setAttribute("student", student);
            request.setAttribute("allStudents", studentDao.getStudent(studentId));
            request.getRequestDispatcher("studentinfo_1.jsp").forward(request, response);
        }

    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
